Search by Subtitles/CC for Youtube™ is a free Chrome add-on developed by KristijanRoss. This add-on allows users to search for videos on Youtube™ using subtitles or closed captions in a specified language.

To use the add-on, users simply need to follow a few steps. First, they can search for anything on Youtube as they normally would. Next, they can select the desired subtitles language from the options available next to the filter button. Finally, by clicking on "Start filtering", the add-on will highlight all video thumbnails that have subtitles or closed captions in the selected language, anywhere on Youtube.

One useful feature of this add-on is that it remembers the selected language, making it easier for users to find videos with subtitles in their preferred language in the future. Additionally, if a video has subtitles available, users can click on the CC badge to see a list of all available languages and download the subtitles for each language.

Please note that YouTube™ is a registered trademark of Google Inc. and the use of this trademark is subject to Google Permissions.